YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.40 | 75.71 | 77.40 | 66.88 | 58.23 | k | 40.53 | 26.97 | 58.65 | f | ||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | 32.61 | 34.55 | 38.06 | 50.85 | 54.02 | 65.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.87 | f | ||||||
1966 | 27.86 | c | 26.24 | a | ----- | z | ----- | z | 62.50 | 68.15 | 78.65 | 73.76 | 66.64 | b | 51.95 | 44.77 | 28.92 | 52.94 | b | |||||||
1967 | 31.94 | 37.32 | 44.44 | 45.83 | 56.32 | a | 63.25 | 77.29 | 76.82 | 65.84 | a | 51.63 | 41.95 | 25.44 | 51.51 | |||||||||||
1968 | 25.63 | a | 38.38 | 43.68 | 45.20 | 55.84 | 66.47 | a | 74.97 | 67.48 | 60.10 | 50.87 | 37.73 | 29.26 | 49.63 | |||||||||||
1969 | 33.05 | 31.82 | 37.33 | a | 50.03 | 63.45 | 63.73 | 74.69 | 74.93 | a | 67.95 | 46.37 | 38.28 | 31.11 | 51.06 | |||||||||||
1970 | 32.76 | 39.30 | 39.42 | 43.80 | 57.15 | 66.83 | 74.52 | 75.78 | a | 58.87 | 46.31 | 41.43 | 29.32 | 50.46 | ||||||||||||
1971 | 32.22 | a | 34.32 | 39.90 | 47.68 | 56.94 | 66.20 | 74.97 | 74.58 | a | 59.43 | 47.10 | 37.30 | 26.21 | 49.74 | |||||||||||
1972 | 29.55 | 36.60 | 45.66 | 48.10 | 59.26 | 68.38 | 73.87 | 72.53 | 61.84 | a | 53.18 | 37.60 | 23.16 | 50.81 | ||||||||||||
1973 | 20.48 | 30.89 | 39.63 | 45.85 | 59.40 | 67.18 | 74.06 | 73.16 | c | 60.50 | a | 52.37 | 39.83 | 32.00 | 49.61 | |||||||||||
1974 | 28.35 | 31.20 | 44.84 | 47.45 | 58.52 | 70.13 | 75.94 | 71.02 | 64.45 | 53.10 | 40.55 | 29.06 | 51.22 | |||||||||||||
1975 | 25.95 | 33.50 | 39.98 | 43.27 | 53.23 | 63.27 | 75.84 | 70.76 | 63.20 | 50.73 | 35.95 | 31.94 | 48.97 | |||||||||||||
1976 | 28.11 | 33.00 | 36.13 | 48.28 | 60.68 | 64.28 | a | 75.87 | 70.18 | 65.20 | 49.39 | 39.98 | 28.37 | 49.96 | ||||||||||||
1977 | 25.63 | 34.09 | 37.39 | 53.28 | 53.85 | 72.75 | 75.17 | a | 73.23 | a | 64.42 | 53.65 | 40.48 | 36.24 | 51.68 | |||||||||||
1978 | 34.27 | 37.68 | 46.39 | 49.10 | 55.77 | 65.93 | 74.39 | 70.34 | 61.95 | 54.40 | 37.07 | 26.40 | 51.14 | |||||||||||||
1979 | 21.73 | 31.70 | 41.63 | 49.47 | 59.24 | 67.97 | 75.02 | 72.95 | 67.87 | 54.71 | 34.43 | 31.74 | 50.70 | |||||||||||||
1980 | 31.87 | 35.57 | 40.10 | 52.18 | 56.66 | 66.98 | 77.18 | 73.21 | 65.28 | 51.47 | 40.77 | 32.82 | 52.01 | |||||||||||||
1981 | 29.97 | 37.14 | 43.58 | 54.07 | 57.45 | 68.00 | q | 77.98 | d | 77.00 | b | 67.85 | 50.19 | 43.82 | 36.02 | 52.28 | a | |||||||||
1982 | 29.05 | 31.77 | 41.61 | 47.12 | a | 57.73 | 67.44 | d | 74.47 | 76.93 | d | 62.96 | g | 48.30 | a | 37.57 | a | 31.80 | d | 49.43 | a | |||||
1983 | 34.23 | c | 37.56 | a | 42.60 | 44.20 | 55.25 | a | 66.16 | a | 75.17 | a | 75.86 | b | 66.23 | b | 54.28 | b | 41.35 | c | 29.15 | 51.84 | ||||
1984 | 22.55 | a | 25.29 | a | 37.61 | 45.44 | c | 59.98 | f | 65.56 | d | 75.00 | a | 74.53 | 64.43 | 47.13 | 40.72 | 28.17 | b | 47.86 | a | |||||
1985 | 23.68 | a | 25.38 | 38.87 | 54.75 | 61.63 | 70.85 | 78.13 | 74.19 | 60.50 | 52.05 | 37.17 | a | 26.35 | 50.30 | |||||||||||
1986 | 29.90 | 40.39 | 48.31 | 49.70 | 59.05 | 74.22 | 74.65 | 76.95 | a | 60.47 | 52.28 | a | 41.60 | 29.10 | a | 53.05 | ||||||||||
1987 | 28.07 | b | 36.56 | a | 42.33 | a | 57.72 | 62.75 | a | 71.48 | 73.82 | 73.08 | 65.24 | c | 56.73 | 41.79 | a | 30.20 | a | 53.31 | ||||||
1988 | 27.27 | 34.93 | a | 41.35 | 54.05 | a | 59.40 | b | 75.75 | 79.56 | 74.90 | 64.66 | b | 60.08 | 41.52 | d | 29.31 | b | 53.57 | |||||||
1989 | 22.87 | a | 27.33 | b | 46.77 | a | 56.48 | d | 61.47 | 68.68 | 79.72 | a | 74.02 | b | 66.05 | a | 54.28 | a | 40.70 | 30.92 | 52.44 | |||||
1990 | 33.37 | a | 33.91 | 45.74 | 54.71 | a | 58.61 | 70.70 | 78.32 | 74.56 | 70.62 | 52.76 | b | 41.91 | a | 22.31 | 53.13 | |||||||||
1991 | 25.87 | 37.80 | 43.44 | 48.97 | a | 56.25 | a | 68.15 | 77.81 | 76.72 | a | 64.61 | b | 53.69 | 39.19 | a | 29.63 | 51.84 | ||||||||
1992 | 27.31 | b | 38.91 | b | 48.36 | b | 58.02 | 64.87 | 71.43 | a | 75.17 | a | 76.35 | a | 66.34 | a | 55.82 | 34.95 | 28.30 | d | 53.82 | |||||
1993 | 26.65 | 30.33 | b | 43.58 | 48.66 | a | 61.85 | 63.10 | a | 68.30 | c | 72.72 | d | 64.02 | b | 52.23 | 34.73 | 31.24 | 49.78 | |||||||
1994 | 36.78 | a | 34.39 | a | 45.11 | 52.80 | c | 63.45 | 72.52 | b | 78.55 | a | 77.42 | 67.59 | a | 50.67 | b | 34.20 | c | 32.28 | a | 53.81 | ||||
1995 | 33.58 | a | 41.82 | 44.12 | b | 49.19 | a | 56.08 | a | 66.02 | b | 74.63 | a | 76.08 | a | 66.62 | a | 52.91 | c | 47.85 | d | 39.06 | g | 55.36 | a | |
1996 | 33.25 | c | 34.19 | b | 45.50 | f | 50.48 | d | 58.77 | c | 72.98 | c | 77.62 | c | 75.45 | c | 61.80 | c | 52.90 | e | 41.87 | c | 36.77 | e | 54.19 | a |
1997 | 32.00 | f | 34.93 | a | 45.59 | b | 47.68 | b | 62.11 | 68.90 | a | 75.21 | e | 75.97 | 67.62 | e | 53.34 | c | 43.10 | d | 29.64 | c | 54.92 | a | ||
1998 | 36.28 | b | 37.50 | c | 42.17 | b | 47.91 | c | 58.11 | h | 62.98 | d | 77.90 | b | 74.55 | c | 70.65 | d | 53.53 | b | 43.68 | 30.14 | c | 52.48 | a | |
1999 | 34.78 | b | 36.46 | c | 44.14 | c | 48.35 | g | 56.17 | b | 67.26 | a | 77.08 | 75.75 | a | 62.77 | 54.68 | 46.83 | a | 31.73 | a | 53.42 | a | |||
2000 | 34.35 | 39.07 | 42.15 | 55.82 | 62.11 | 71.87 | 80.18 | 78.87 | a | 64.46 | b | 53.05 | 32.90 | 32.48 | b | 53.94 | ||||||||||
2001 | 28.98 | 35.30 | a | 46.06 | 51.23 | 63.81 | 69.55 | b | 78.65 | a | 77.72 | a | 69.86 | a | 55.90 | a | 43.71 | b | 27.81 | 54.05 | ||||||
2002 | 27.92 | 27.54 | b | 39.03 | 51.90 | a | 57.98 | b | 70.91 | c | 79.95 | 74.12 | a | 65.18 | 49.66 | 38.36 | a | 35.07 | a | 51.47 | ||||||
2003 | 38.58 | 34.72 | a | 43.58 | a | 50.57 | a | 60.52 | a | 69.10 | 81.33 | b | 77.95 | b | 64.75 | p | 57.48 | b | 36.93 | b | 34.70 | d | 53.22 | a | ||
2004 | 22.04 | d | 27.98 | 46.57 | c | 52.75 | b | 59.08 | a | 69.10 | d | 76.30 | a | 72.14 | b | 64.20 | 53.13 | e | 39.90 | 32.47 | 51.31 | |||||
2005 | 34.40 | 35.28 | a | 42.93 | a | 49.30 | c | 59.18 | c | 65.27 | 78.28 | a | 75.15 | a | 63.83 | a | 54.19 | 42.30 | b | 31.37 | a | 52.62 | ||||
2006 | 33.68 | a | 32.57 | a | 39.95 | a | 51.69 | a | 62.06 | 71.76 | a | 80.76 | 74.31 | d | 62.24 | e | 51.09 | b | 42.08 | 31.28 | b | 52.79 | ||||
2007 | 21.78 | b | 35.89 | a | 45.52 | c | 52.20 | e | 61.40 | a | 71.00 | a | 80.82 | 79.03 | k | ----- | z | ----- | z | 40.74 | g | 28.24 | 49.61 | d | ||
2008 | 24.13 | 31.38 | 38.11 | q | 43.22 | u | ----- | z | ----- | z | 77.87 | 75.39 | 65.63 | 52.87 | 42.95 | 29.95 | 50.02 | d | ||||||||
2009 | 29.71 | 34.34 | 41.13 | 48.70 | 61.77 | a | 66.22 | a | 77.21 | 74.23 | 70.33 | 47.87 | ----- | z | ----- | z | 55.15 | b | ||||||||
2010 | 28.00 | 35.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.18 | 67.38 | 55.97 | 38.06 | c | 34.11 | 47.75 | e | ||||||
2011 | ----- | z | 37.20 | 38.52 | e | 44.71 | d | 52.93 | a | 65.39 | c | 77.11 | 77.26 | 66.90 | ----- | z | ----- | z | ----- | z | 57.50 | d | ||||
2012 | ----- | z | ----- | z | 53.36 | x | 53.43 | 60.56 | 72.98 | d | 81.26 | 80.93 | a | 69.02 | 49.23 | r | 44.59 | g | 36.52 | h | 69.70 | f | ||||
2013 | 17.77 | 27.39 | 42.03 | 47.88 | 59.32 | 70.70 | g | 78.81 | 76.68 | f | 65.37 | k | 49.68 | 41.35 | g | 23.50 | q | 46.13 | e | |||||||
2014 | 29.77 | i | 38.00 | 44.68 | 49.38 | 59.81 | 67.52 | f | 78.37 | 70.54 | r | 67.73 | 56.11 | 40.32 | 34.37 | 52.09 | c | |||||||||
2015 | 33.27 | a | 41.80 | 47.58 | 51.08 | 58.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.42 | g | ||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.19 | 34.33 | 42.60 | 50.06 | 59.03 | 68.22 | 76.82 | 74.77 | 65.11 | 52.44 | 40.02 | 30.31 | 51.66 | |||||||||||||
S.D. | 4.81 | 4.09 | 3.17 | 3.63 | 2.96 | 3.26 | 2.47 | 2.48 | 3.00 | 2.96 | 3.27 | 3.19 | 1.48 | |||||||||||||
SKEW | -0.29 | -0.51 | -0.13 | 0.22 | -0.15 | 0.25 | -0.48 | -0.41 | -0.18 | -0.12 | -0.04 | -0.17 | 0.04 | |||||||||||||
MAX | 38.58 | 41.82 | 48.36 | 58.02 | 64.87 | 75.75 | 81.33 | 80.93 | 70.65 | 60.08 | 47.85 | 36.77 | 54.05 | |||||||||||||
MIN | 17.77 | 25.29 | 36.13 | 43.27 | 52.93 | 62.98 | 68.30 | 67.48 | 58.87 | 46.31 | 32.90 | 22.31 | 48.97 | |||||||||||||
YRS | 47 | 50 | 46 | 47 | 47 | 46 | 49 | 47 | 46 | 46 | 45 | 45 | 31 |